package cn.heima2.code;

public class Demo1 {
    public static void main(String[] args) {

        Zi zi  = new Zi();
        zi.show();
    }
}
class Fu{
    int a=30 ;
}
class Zi extends Fu{
    int a=20;
    public void show (){
        int a =25;
        System.out.println(a);
        System.out.println(this.a);
        System.out.println(super.a);
    }
}


